Costs
The Aero piston engine was a highly complex unit even a new one used oil in large quantities as they leaked like sieves leaving puddles on the floor and filthy to boot plus a multitude of spark plugs and ignition harness to go with them and had a short overhaul life in100s of hours and expensive in man hours to maintain , where as the jet was very clean used hardly any oil were only fitted with 2 ignitor plugs Avtur [low grade paraffin ]was a lot cheaper less volatile and and safer ,after a few years had an overhaul life measured in 1000s of hours and were cheaper to maintain,also they were much lighter in weight.
Last edited by avionic type; 10th Sep 2012 at 00:53.